Ivanisevic: 'Mentally weak' Nishikori won't beat Murray

World No. 1 Andy Murray has found form at the French Open after a slow start to the year and played his best match of the fortnight so far in beating Russian Karen Khachanov in the fourth round on Monday.

The Scot has impressed former Wimbledon champion Goran Ivanisevic, who expects him to see off Japanese Kei Nishikori when they clash in the quarter-finals today.

The Croat, who is playing in the "legends" event at Roland Garros, said of Murray: "He didn't start the year like he wanted and he started to be a little not confident, but he found himself in the right moment.

"What better way to find yourself than at the French Open, when you're top seeded?

"He played very well (against Khachanov) and he's playing better and better. Now a lot of things are possible. Andy knows what he has to do.